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US4457043A Expired / Lapsed US ⏱️ 0.0 years remaining

Sweeper particularly for collecting dust-like material, and the utilization thereof

Assignee: AG ROLBA
•
Filing: 1980-11-13
•
Granted: 1984-07-03
•
Expires: 2000-11-13
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Abstract

Abstract The problem in picking up and collecting very fine dusts such as aluminum dust, cement and the like is to exhaust the transport air into the atmosphere without dusts. A sweeping machine which offers the solution to said problem comprises the following cooperating parts: a main mouthpiece (9) with at least one nozzle (10) blowing from the outside against the center of the mouth and a suction pipe (12) located inside; a secondary nozzle (15) with a suction conduit (17) movable with respect to the main mouthpiece (9); a common conduit (19) into which the two suction conduits (12, 17) open; a coarse separator (23) arranged in front of a cyclone multiple separator (24, 25, 26); a conduit (34, 35) supplying air from the cyclone on the suction side of a fan (3); a separation piece (4) on the exhaust side of the fan for dividing exhausted air and for supplying a portion of said air to the nozzle (10) blowing into the main mouthpiece (9) and the other portion to a separator (38); and an evacuation fan (45) arranged at the outlet of the separator (38).

Inventors

  • 👤 Lennart Oeberg
  • 👤 Alex Meyerhans

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 03:20
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/24; A47L9/00; A47L9/02; A47L9/08; E; E01; E01H; E01H1/00; E01H1/08; E01H1/0827; E01H1/0836; E01H1/0845

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 163 words
A sweeper particularly for collecting dust-like material, characterized by a moveable frame on which the following parts are mounted: a main mouthpiece with at least one nozzle blowing from the outside against the center of the mouthpiece, and an inside suction pipe; a secondary nozzle arranged moveably with respect to the main mouthpiece and having a separate suction pipe; a common conduit into which both of said suction pipes open; a coarse separator arranged on the inlet side of a multiple cyclone separator; a cyclone exhaust conduit connected to center suction pipes in the multiple cyclone separator for conveying exhaust air to the suction side of a blower; a separating piece arranged on the exhaust side of the blower for dividing the exhaust air in order to feed a portion thereof to the blowing nozzle in the main mouthpiece and the other portion of the exhaust to a second separator; and an evacuation fan arranged at the outlet side of the second separator.
Claim 2
Dependent Claim 163 words
A sweeper particularly for collecting dust-like material, characterized by a moveable frame on which the following parts are mounted: a main mouthpiece with at least one nozzle blowing from the outside against the center of the mouthpiece, and an inside suction pipe; a secondary nozzle arranged moveably with respect to the main mouthpiece and having a separate suction pipe; a common conduit into which both of said suction pipes open; a coarse separator arranged on the inlet side of a multiple cyclone separator; a cyclone exhaust conduit connected to center suction pipes in the multiple cyclone separator for conveying exhaust air to the suction side of a blower; a separating piece arranged on the exhaust side of the blower for dividing the exhaust air in order to feed a portion thereof to the blowing nozzle in the main mouthpiece and the other portion of the exhaust to a second separator; and an evacuation fan arranged at the outlet side of the second separator.
Claim 3
Dependent Claim 19 words
A sweeper as defined in claim 1, characterized by the fact that the second separator is a hose filter.
Claim 4
Dependent Claim 28 words
A sweeper as defined in claim 1, characterized by the separating piece being a swivelable flap for controlling at least the flow of air to the blowing nozzle.
Claim 5
Dependent Claim 24 words
A sweeper as defined in claim 1, characterized by the fact that the coarse separator is a driven vane wheel preferably having perforated vanes.
Claim 6
Dependent Claim 30 words
A sweeper as defined in claim 4, characterized by a collecting conduit connected downstream of the vane wheel and forming part of a collecting bin for the multiple cyclone separators.
Claim 7
Dependent Claim 38 words
A sweeper as defined in claim 1, characterized by the fact that the suction pipe is arranged in the center and that the blowing nozzle extends over at least a portion of the circumference of the main mouthpiece.
Claim 8
Dependent Claim 21 words
A sweeper as defined in claim 1, characterized by the fact that the secondary nozzle is arranged on a hose pipe.
Claim 9
Dependent Claim 23 words
A sweeper as defined in claim 1 characterized by the moveable frame, having said parts mounted therein, is positioned on a four-wheel vehicle.

References Cited (Backward Citations)

US978216A Cited
US1459968A Cited
US2932845A Cited
US4044422A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-07-03 1988-01-02 1988-07-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-07-03 1992-01-02 1992-07-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-07-03 1996-01-02 1996-07-03 $7700.00 Window Closed / Lapsed

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